[2605.08116] The Safety-Aware Denoiser for Text Diffusion Models
[Submitted on 28 Apr 2026]
Title:The Safety-Aware Denoiser for Text Diffusion Models
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Abstract:Recent work on text diffusion models offers a promising alternative to autoregressive generation, but controlling their safety remains underexplored. Existing safety approaches are geared toward autoregressive models and typically rely on post-hoc filtering or inference-time interventions. These are inadequate for effectively addressing safety risks in text diffusion models. We propose the Safety-Aware Denoiser (SAD), a safety-guidance framework in text diffusion models. The SAD modifies the iterative denoising process such that the text sample at the final denoising step is steered toward provably safe regions of the text space. This inference-time method can integrate safety constraints into the denoiser, avoiding computationally expensive retraining of the underlying diffusion model and enabling flexible, lightweight safety guidance. We evaluate the safety of the generated text using the SAD, with respect to hazard taxonomy, memorization, and jailbreak. Experimental results show that SAD substantially reduces unsafe generations while preserving generation quality, diversity, and fluency, outperforming existing methods. These results demonstrate that our safety guidance during denoising provides an effective and scalable mechanism for enforcing safety in text diffusion models.
Comments: 27 pages, 12 figures. Code available at: this https URL
Subjects:
Machine Learning (cs.LG); Artificial Intelligence (cs.AI)
Cite as: arXiv:2605.08116 [cs.LG]
(or arXiv:2605.08116v1 [cs.LG] for this version)
https://doi.org/10.48550/arXiv.2605.08116
arXiv-issued DOI via DataCite
Submission history
From: Amman Yusuf [view email] [v1] Tue, 28 Apr 2026 00:44:30 UTC (1,467 KB)
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